JPH10133805A - Position indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate operation information for a dial as an output signal by arranging a dial rotatable in a core axis direction at a position where the dial is operable at the time of holding a pen, detecting the dial operation information, converting the detecting information into an output signal, and detecting pen pressure. SOLUTION: The rotatable dial 11 is fitted to a pen type position indicator, and when the dial 11 is rotated, the degree of its rotation can be returned to a tablet as digital information. Two kinds of analog values, i.e., pen pressure information from a pen pressure detecting sensor 14 and information based on the rotation of the dial 11, are respectively converted into digital values and information combining these digital values and information obtained from tact switches 16 can be returned to the tablet. In this case, a capacitor is used for the sensor 14. The rotatable dial 11 is formed so as to be returned to a prescribed position without being held on a fixed position when an operator's hand is released from it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pen-type position indicator used in a position detecting device.

[0002]

2. Description of the Related Art As a conventional technique, a position indicator inputs two-dimensional position information and pen pressure by tracing the surface of a tablet. When further information is needed, a tact switch or the like provided on the position indicator has been used.

[0003]

However, in a conventional configuration, in addition to two-dimensional position information and pen pressure, for example, three-dimensional position information, an input that requires a larger amount of information is input. It was difficult to do. In a drawing application, for example, if the pen pressure is assigned to, for example, control of the line thickness, the control of other colors or the amount of ink cannot be easily performed with a fingertip. Need to be clicked with a pen point.

[0004] The present invention has been made in view of such a problem, and it is possible to input three-dimensional position information.
Alternatively, in a drawing application or the like, in addition to control by pen pressure, there is provided a position indicator that can easily control a color tone or an amount of ink by rotating a dial.

[0005]

In order to achieve the above object, a position indicator of the present invention comprises a dial attached to a position operable when holding a pen, the dial being rotatable in the axial direction of a core body, and a dial. It comprises means for detecting dial operation information and converting it into a predetermined output signal, and pen pressure detecting means.

With this configuration, the conventional two-dimensional position,
In addition to the pen pressure information, further information can be easily controlled with a fingertip and generated as a predetermined output signal.

[0007]

First Embodiment Configuration of First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory view of a position indicator with a rotatable dial according to an embodiment of the present invention. In FIG. 1, 11 is a rotatable dial, 12 is a pen tip, 13 is a resonance coil, 14 is a writing pressure detection sensor, 15 is a circuit part, and 16 is a tact switch. FIG. 2 is a diagram showing a circuit portion indicated by reference numeral 15.

Operation of the Embodiment The operation of the rotatable position indicator with a dial configured as described above will be described.

FIG. 1 shows a pen-type position indicator provided with a rotatable dial indicated by reference numeral 11. By moving this switch, the degree of the rotation can be returned to the tablet as 8-bit digital information.

FIG. 2 shows a specific circuit of the present embodiment. Here, the pen pressure information from the pen pressure detecting sensor 14 and the information obtained by rotating the rotatable dial 11 are shown. The two analog quantities are converted into 8-bit digital values, respectively, and a total of 19-bit operation information including 3-bit tact switch information can be returned to the tablet. FIG. A shows waveforms of respective parts shown in a to h in the circuit diagram.
The operation will be described below with reference to these drawings.

In FIG. 2, reference numeral 201 denotes a coil, and 202 denotes a capacitor. These constitute a resonance circuit 203 which resonates at the frequency of an electromagnetic wave from a tablet (not shown). When an electromagnetic wave a from the tablet is received, an induced voltage b is generated. I do. A switch 204 is connected to the resonance circuit 203 so that the resonance state of the resonance circuit can be controlled by a control signal h.

The resonance circuit 203 has a diode 20
5, a first detection circuit including a resistor 206, a capacitor 207, and a buffer amplifier 208 is connected. In the first detection circuit, the output signal c is a resistance such that it is generated when the electromagnetic wave a from the tablet is continuously received for a first predetermined time (in this embodiment, sufficiently longer than 100 μS). 206 and capacitor 2
07 and the time constant of the integrating circuit composed of the number 07.

Reference numeral 213 denotes a D flip-flop, 214 denotes a resistor, 215 denotes a capacitor, which constitute a one-shot mono-multi circuit. The signal d has a fixed time width from the rising time of the output signal c of the first detection circuit. Occurs.

The resonance circuit 203 has a diode 20
9, a second detection circuit including a resistor 210, a capacitor 211, and a buffer amplifier 212 is connected. In the second detection circuit, the output signal e is a resistance such that it is generated when the electromagnetic wave a from the tablet is continuously received for a second predetermined time (in this embodiment, sufficiently longer than 700 μS). 210 and capacitor 2
11 is determined.

Reference numeral 216 denotes a resistor, 217 denotes a variable capacitor used as a pen pressure detecting sensor, 218 denotes an inverter amplifier, and 219 denotes an AND gate. The pulse width of the pulse is determined by the pen pressure information set by the variable capacitor 217 by these circuits. Obtain a changing signal f. Reference numeral 220 denotes a counter whose clock terminal is connected to the resonance circuit 203 via a coupling capacitor 221. Counter 2
20 is connected to a signal f, which counts the number of waves of the high-frequency signal generated in the resonance circuit 203 only during the pulse width of the signal f that changes in accordance with the pen pressure, and calculates 8-bit digital values Q0 to Q7. Output as

Here, the writing pressure information may be detected by making the resistor 216 variable.

222 is a resistor, 223 is a variable capacitor,
Reference numeral 224 denotes an inverter amplifier, and 225 denotes an AND gate which obtains a signal g whose pulse width changes in accordance with operation information of a rotatable dial set by the variable capacitor 223 by these circuits. Reference numeral 226 denotes a counter whose clock terminal is connected to the resonance circuit 203 via a coupling capacitor 221. The signal g is connected to the counter 226, and the number of waves of the high-frequency signal generated in the resonance circuit 203 is counted during the pulse width of the signal g that changes according to the operation information of the dial, and an 8-bit digital value is calculated. Output as Q0-Q7.

Here, the operation information of the dial may be detected by making the resistor 222 variable.

Reference numeral 227 denotes a parallel-serial conversion circuit. The clock input terminal of the circuit 227 is connected to an output signal d of a one-shot mono-multi circuit. The counter 226 is 8-bit data obtained by digitizing pen pressure information output from the counter 220. 8-bit data obtained by digitizing dial operation information output from the
Digital data of a total of 19 bits of bit switch data is sequentially output at each rising timing of the signal d. The output signal further passes through an AND gate 228, and is output only during a period during which the signal d is generated.
Is obtained. The switch 204 is controlled to open and close by this signal h, so that on the tablet side, 8-bit data obtained by digitizing pen pressure information, 8-bit data obtained by digitizing dial operation information, and 3-bit switch data SW1 to SW3. 19 bits of digital data appear as the presence or absence of a received signal. That is, the control signal h
Is "0", a signal is detected on the tablet side, and when the control signal h is "1", no signal is detected on the tablet side. In this way, information corresponding to the operation of the position indicator is detected on the tablet side.

The rotatable dial may return to a predetermined position when the hand is released.

According to the present embodiment as described above, according to the conventional two-dimensional position,
In addition to pen pressure information, additional information that can be easily controlled with a fingertip can be generated.

[0023]

Second Embodiment Configuration of Second Embodiment Hereinafter, a second embodiment of the present invention will be described with reference to the drawings.

FIG. 3 is a circuit diagram of a second embodiment of the present invention. Using an absolute type rotary encoder that generates an 8-bit parallel signal according to the degree of rotation of the rotatable dial, a parallel-serial conversion circuit 22
In step 7, the signal is converted into a predetermined serial signal.

Operation of Embodiment 2 The operation of the position indicator configured as described above will be described below.

In the circuit part of FIG. 2 and the first embodiment, the analog amount is detected by the time constant circuit in which the capacitance or the resistance changes by rotating the rotatable dial. By using an absolute rotary encoder that generates an 8-bit serial signal according to the state of rotation of the apparatus by moving a simple dial, the parallel / serial conversion circuit 227 converts the signal into a predetermined serial signal.

Effects of Embodiment 2 As described above, according to this embodiment, the conventional two-dimensional position,
In addition to pen pressure information, additional information that can be easily controlled with a fingertip can be generated.

[0028]

As described above, according to the present invention, in addition to the conventional two-dimensional position and pen pressure information, operation information on the dial, such as three-dimensional position information, is generated as an output signal. The position indicator which can be provided can be provided, and the effect is great.

[Brief description of the drawings]

 FIG. 1 is an explanatory diagram of a position indicator according to a first embodiment of the present invention. FIG. 2 is a circuit diagram of a first embodiment of the present invention. FIG. 3 is a circuit diagram of a second embodiment of the present invention.

[Explanation of symbols]

 11: rotatable dial 12: pen tip 13: coil for resonance 14: sensor for pen pressure detection 15: circuit part . . Tact switch

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[Procedure amendment]

[Submission date] January 16, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a position indicator according to a first embodiment of the present invention.

FIG. 2 is a circuit diagram of a first embodiment of the present invention.

FIG. 3 is a circuit diagram of a second embodiment of the present invention.

FIG. 4 is a waveform diagram of each part.

[Description of Signs] 11 Rotatable dial 12 Nib 13 Resonance coil 14 Sensor for writing pressure detection 15 Circuit part 16 Tact switch

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Katsurahei 2-510-1, Toyonodai, Otone-cho, Kita-Saitama-gun, Saitama

Claims (5)

[Claims] 1. A pen-type position indicator used in a position detecting device, comprising: a dial attached to a position operable when a pen is held, the dial being rotatable in an axial direction of a core body; A position indicator, comprising: means for detecting a pressure; and pen pressure detecting means. 2. A method according to claim 1, wherein said means for detecting operation information of said dial uses a variable capacitor.
Position indicator as described. 3. The position indicator according to claim 1, wherein said means for detecting operation information of said dial uses a variable resistor. 4. The position pointing device according to claim 1, wherein the means for detecting the operation information of the dial uses an absolute type rotary encoder. 5. The rotatable dial according to claim 1, wherein the rotatable dial is formed so as to return to a predetermined position without holding its position when the hand is released. Position indicator.